Author(s):
Marques, J. M. C. 
; Pereira, F. B. ; Leitão, T.
Date: 2008
Persistent ID: http://hdl.handle.net/10316/10417
Origin: Estudo Geral - Universidade de Coimbra
Document details
On the Use of Different Potential Energy Functions in Rare-Gas Cluster Optimiza...
Description
We study the effect of the potential energy function on the global minimum structures of argon clusters arising in the optimization performed by genetic algorithms (GAs). We propose a robust and efficient GA which allows for the calculation of all of the putative global minima of ArN (N = 3−78) clusters modeled with four different potentials. Both energetic and structural properties of such minima are compared among each other and with those previously obtained for the Lennard-Jones function. In addition, the possibility of obtaining global minima of one potential through local optimization over the corresponding cluster geometry given by other potentials was associated with some structural parameters. The influence of the contribution from the three-body (Axilrod−Teller−Muto) triple-dipole potential (including or not a damping function to describe its correct behavior at smaller interatomic distances) has also been analyzed. http://dx.doi.org/10.1021/jp711918t
We study the effect of the potential energy function on the global minimum structures of argon clusters arising in the optimization performed by genetic algorithms (GAs). We propose a robust and efficient GA which allows for the calculation of all of the putative global minima of ArN (N = 3−78) clusters modeled with four different potentials. Both energetic and structural properties of such minima are compared among each other and with those previously obtained for the Lennard-Jones function. In addition, the possibility of obtaining global minima of one potential through local optimization over the corresponding cluster geometry given by other potentials was associated with some structural parameters. The influence of the contribution from the three-body (Axilrod−Teller−Muto) triple-dipole potential (including or not a damping function to describe its correct behavior at smaller interatomic distances) has also been analyzed. http://dx.doi.org/10.1021/jp711918t
Document Type
Article
Language English
Language English
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